and coral can do the job
we humans have coral cities
But how would you use coral to make watertight structures you need for the next step in technology. The whole point about melting metals is creating watertight structures
maby they are like ants and can build out of their food
throw up some special mixture
Sorry to interrupt, I just wanât to answer the question about the leadâŚLead is a metal. Heavy metal to by preciseâŚwell acording to wikipedia anywayâŚ
ok
also welcome to the forums
or i just didnâd read all the posts and am now stopid? 
thank you 
But having structures isnât the point. The point is âcan they build a spaceship underwaterâ. They wonât be making a spaceship out of coral. They will need metals and developed technology
Melting metals underwater is just the first step towards getting to space
they can build their barf out to the surface and smelt there
But then they arenât aquatic civilization. Allowing amphibians to have advanced technology has always been my plan
yeah they whoud be amfibians then
Glad that you are back on the âunderwater civs with technology are not possibleâ team
maby they can melt in an under water air filed cave with long coral sticks or barf sticks
but they whoud burn all the oxigen
i give up
heatwents?